60 10 19 coulomb unit of d meter 1 1 10 10 meters unit

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Unformatted text preview: .60 × 10-19 coulomb Unit of d = “meter” 1 Å = 1 × 10-10 meters Unit of dipole moment= “debye” 1 Debye = 3.34 ×10-30 Coulomb·meter Dipole Moment (µ) Given Given the bond length of HCl =1.27 Å, estimate its dipole moment. 1+ 1- Assume : H --- Cl µ= Q×d Q = 1 e charge Hδ+ --- Clδ- 1 electron charge = 1.60 × 10-19 coulomb =1× 1.60 × 10 coulomb × 1.27 ×10 meter -19 -10 = 2.03 ×10-29 coulomb-meters 1 Debye = 3.34 ×10-30 Coulomb·meter Coulomb· µ = 2.03 ×10-29 /3.34 ×10-30 = 6.08 D Actual dipole moment measured for HCl is 1.08 D, Estimate the partial charge separation (δ) in HCl ? Dipole Moment (µ) Actual Actual dipole moment measured for HCl is 1.08 D. 1.08 Estimate the partial charge separation (δ) in HCl. Actual situation: Hδ+ ----- Clδ- Q=δ δ: partial charge separation µ= δ ×d Assuming complete charge separation: complete Partial charge separation: Actual situation: H+0.178 ----- Cl-0.178 H1+ --- Cl1- : µ =6.08 D µ = δ × 6.08D=1.08D δ = 0.178 Lewis Lewis Structures of Covalent Compounds Lewis structures: show how electrons are distributed among all the atoms in a molecule. •Help determine molecular geometry. molecular •Explain bonding in polyatomic ions. H2 x HH CH4 H x x HxC H x H F2 xx x F Fx x xx Matching unpaired dots for SIMPLE molecules! SIMPLE Drawing Lewis Struc...
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This document was uploaded on 02/26/2014.

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